title: Preoperative sonographic diagnosis of a unilateral tubal twin gestation with documented fetal heart activity.
authors.affiliation: Department of Obstetrics and Gynecology, Strong Memorial Hospital, University of Rochester School of Medicine and Dentistry, NY 14642.
authors.forename: D M
authors.initials: DM
authors.lastname: Sherer
authors.forename: L
authors.initials: L
authors.lastname: Liberto
authors.forename: J R
authors.initials: JR
authors.lastname: Woods
mesh_terms: D000328:Adult; D005260:Female; D005318:Fetal Heart / Q000000981:diagnostic imaging*; D006801:Humans; D011247:Pregnancy; D011272:Pregnancy, Multiple; D011274:Pregnancy, Tubal / Q000000981:diagnostic imaging*; D014427:Twins; D014463:Ultrasonography